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Aging heart changes shape, shrinks and loses pumping function too
11-04-2007 · EurekAlert!Researchers at Johns Hopkins have evidence to explain why the supposedly natural act of aging is by itself a very potent risk factor for life-threatening heart failure.
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Keywords: aging, heart, changes, shape, shrinks, loses, pumping, function, change, shrink, lose
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02-19-2007 · EurekAlert!
Cardiac function depends upon properly shaped heart chambers. Here the authors show that blood flow and contractility independently regulate cell shape changes in the emerging ventricle.
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11-02-2006 · EurekAlert!
Researchers in the Linus Pauling Institute at Oregon State University have discovered a fundamental mechanism that causes aging blood vessels to lose their elasticity -- a literal "hardening of the arteries" that is often a prelude to high blood pressure and cardiovascular disease. An understanding of this mechanism provides an important new target for both drugs and dietary changes that might help prevent or treat atherosclerosis and heart disease.
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When Belousov-Zhabotinsky gels are put into a solution, they beat like hearts. The way those gels change shape had never been theoretically examined, until now. Researchers at the University of Pittsburgh have formulated the first general model to study large-scale shape changes in responsive gels. Their results are published today in the prestigious journal Science.
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11-01-2006 · EurekAlert!
Mechanical "artificial hearts" can be used to return severely failing hearts to their normal function, potentially removing the need for heart transplantation, according to new research. The mechanical devices, known as Left Ventricular Assist Devices (LVADs), are currently used in patients with very severe heart failure whilst they await transplantation. The new study shows that using an LVAD combined with certain drug therapies can shrink the enlarged heart and enable it to function normally once the LVAD is removed.
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- More muscle for the argument to give up smoking
07-09-2007 · EurekAlert!
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- Education does not protect against age-related memory loss, say USC researchers
01-09-2007 · EurekAlert!
Adults over 70 with higher levels of education forgot words at a greater rate than those with less education, according to a new study from the University of Southern California. The findings, published in the current issue of Research on Aging, suggest that after age 70, educated adults may begin to lose the ability to use their schooling to compensate for normal, age-related memory loss.
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